Mold for constructing hollow walls of concrete.



A. GENDRON & J. R RICHARDSON.

MOLD FOR CONSTRUCTING HOLLOW WALLS 0F CONCRETE.

APPLICATION FILED MAY 9. 1916.-

6, Patented Sept. 18, 1917.

2 SHEETS SHEET I.

i I A. GENDRON & J. R. RICHARDSON.

MOLD FOR CONSTRUCTING HOLLOW WALES 0F CONCRETE. APPLICATION HLEb MAY 9, 1916.

1,240,486 Patented Sept. 18,1917.

2 SHEETS-SHEET 2.

i I 11 p 6 ,2,/ nur 6 1/\11 7v 7 50 gj/i i I a 20 W7 7 Z UNITED sT TEs PATENT oFFIon ABMINI GENDRON AND JOHN R. RICHARDSON, or vrnnnnn, CALIFORNIA.

MOLD FOR GONSTRUCTING HOLLOW WALLS CONCRETE. 7

Application filed May 9, 1916. Serial No. 96,332.

To all whom it may concern: 7

Be it known that we, ARMINI GnNnRoN and JOHN R. RICHARDSON, both citizens of the United States, residing at Madera, in the county of Madera and Stateof California, have invented certain new and usefulImprovements in Molds for Constructing Hollow Walls of Concrete, of which the following is a specification.

-This inventionrelates to'molds for use in the construction of hollow walls from concrete, the molds and parts thereof which we have invented for such purpose being. of such dimensions and configuration that when properly used in the construction of hollow walls the walls will be provided at intervals with oppositely located abutments, the walls being tied together by wall-ties which are locked in place and span the space between the abutments.

Our invention further relates to the construction of means for spanning or closing the spaces between the end portions of the inner mold sections and for spacing the molds or forms, as will be hereinafter set In the accompanying drawings which illustrate a preferred embodiment of our 1nvention, Figure 1 is a plan view. Fig. 2 is i a sectional view, taken on the llne 22 of 1 I to the several mold plates.

Referring to the drawings it willbe noted that the outer wall-plates 10 and 10' are'of considerable length by comparison with the inner sections of themold and that they above the upper edges of the plates so 'asto be readily engaged by rods 12, that are used to raise the plates 10 and 10 and to 'aline the inner plates or mold sections 13 and 13 which are-provided with similar hooks'll.

13" are made up of a number of comparatively short sections, having beveled ends and in use the plates 13 and 13 are spaced so that the beveled ends'of the alined sections will be separated to provide between the in- Specification of Letters Patent.

Patented Sept. 18, 191 v.

ner ends of the wall plates spaces for concrete to. form oppositely projecting abutmentsintegral with the two walls, and the walls are tied one to the other by ties-which are sections having straight edges, and when it is desired to provide the walls at the corners with abutments sheet metal elements 14: and 15, are used. The sheet metal elements for formingthe corner abutments are each provided with recesses lat and'15, the

recesses being formed in the lower edges to overlie tie-rods 16 that engage with the vertical bars 17 which "are embedded in the concrete. The tie-rods 16 are placed in engagement with the bars 17 and rest upon the concrete that forms a course of the completed wall. The cornerelement 1 1 has a centrally located longitudinal bend and two sidebends which will position the side portions of the plate'or member at right angles for engagement with the faces of the mold sections 13, and the other abutment forming corner element 15 is preferably with converging walls, at its central portion, and has angularly disposed sides for engagement with the ends of the mold sections 13. When the inner mold sections 10' do not contact or overlap we use a bent strip 18 shaped as shown by Fig. 1 of the drawings.

As shown-by Fig. 1 of the drawings, the

inner wall plates or mold sections 13 and 13 have attached to their inner sides battens 19 .which may be connected by cross plates or have attached thereto hooks 11, which extend links 20 that are pivoted to'the edgesof the battens soas to admit of opposite inner wall with abutments of greater area than is pos- Theinner wall plates or'mold sections '13,

sible with inner plates of ordinary thickness, the plates or mold sections 13 and 13 will have attached to their ends battens 19 having beveled edges as shown by Figs. 2 and 3, and when the battens 19" are present the links 20" will beattached thereto; The

links serve to connect the inner sections of the mold and insure the forming of the abutments opposite each other.

In connection with the outer mold sections or plates 10 and 10 we may employ clamps 21, which comprise side pieces 22 and an upper cross piece 23 to which the side pieces are attached and braced, and below the cross piece is a rod 24.0ne end of which is threaded to receive a nut, the opposite end of the rod being shaped to provide an eye to receive the pintle upon which is mounted a cam-lever 25, that is used to draw the 'side bars 22 toward each other and in clamped engagement with the mold. plates 10 and 10'.

Between the ends of the inner wall plates 13 and 13 or between the battens or extensions 19 secured to opposite wall plates to overlie the spaces between the ends thereof are placed, before the concrete is poured to fill the forms, combined closures and spacers 26, comprising a central wedge shaped member 27 and inverted wedges 28, the outer sides of the wedges 28 being parallel when in position. The wedges 28 are connected to the wedge 27 by links 29 and the wedge 27 may carry bars 30 which overlap the wedges 28 to serve as guides. lVedges 27 and 28 are provided with recesses 32 formed in their lower portions to receive the tie bars 16. In use the inverted wedges will overlie the spaces between the inner forms .13 and 13 to provide expansible closures for such spaces, and to provide means for spacing the forms the wedges 27 have hinged thereto bars 30 to the underside of which are secured blocks 31 for engagement with the inner faces of the outer mold forms or sections 10, 10, 18 and 18 when the bars are placed in a horizontal position. The bars 30 are connected to the central member or wedge 27 of the spacers 26 by hinges 33 as shown by Figs. 2, 3 and 4, so that in use two of the bars may rest upon the upper edges of vertical members of the mold, to hold the wedge againstmovement when the inverted wedges are moved upward.

In practice instead of using forms made of wood we may substitute therefor metal plates and when such plates are used the adjacent ends of the inner mold plates will be bent at an angle to form the abutments, and the outer forms 10 and 10 will have recesses or openings and means for spacing such forms, substantially as shown in our copending application filed December 11, 1915, Serial No. 66,322. 1

We claim.

1, In a molding apparatus for use in the construction of hollow walls, the combination of inner connected mold sections, outer mold sections, the inner sections being of less length than the outer sections and spaced apart longitudinally and having the ends beveled to provide the wall with inward extending and oppositely located abutments, and means for closing the longitudinal spaces between the inner mold sections comprising a central wedge and tapered side pieces which engage with opposite inner mold sections.

2. In an apparatus for molding hollow walls, the combination with inner and outer mold sections; the inner mold sections being of less length than the outer sections and being spaced apart longitudinally, means for connecting the opposite inner mold sections one to the other, means for closing the longitudinal spaces between the inner mold sections, and a spacing bar attached to said closing means for engagement with the mold sections.

3. In an apparatus for molding hollow walls, the combination with inner and outer mold sections, the inner mold sections being of less length than the outer mold sections and spaced apart longitudinally to provide abutments on the inner faces of the walls, means for closingthe spaces between adjacent inner mold sections comprising a member having converging sides, tapered members associated therewith and adapted to be forced toward the inner faces of opposite inner mold sections by depression of the member having converging sides.

4. In combination inner and outer mold sections for use in the construction of hollow walls with oppositely located and inward extending abutments, the inner mold sections being spaced longitudinally, means for closing the spaces between longitudinally disposed inner mold sections comprising tapered side pieces contacting opposite sections, a wedge for engagement with the tapered side pieces, and a spacing bar attached to the wedge and having blocks for engagement with the mold sections.

5. In an apparatus for molding hollow walls, the combination with outer and inner mold sections, means for connectingopposite inner mold sections, said sections in use being spaced apart longitudinally, means for closing the space between the inner mold sections at the longitudinal spaces compris ing a central wedge shaped member, tapered side members which are attached to the central wedge shaped member and spacing bars for engagement with each of the mold sections maintained in hinged engagement with said central wedge shaped member.

6. A mold for use in the construction of hollow concrete walls comprising outer mold sections, inner mold sections, the opposite side pieces thereof being connected and provided with beveled ends, said sections being longitudinally spaced, closures for the spaces between the inner mold sections, said closures having recesses to receive tie-bars which eX- tend across the spaces between the ends of the inner mold sections.

7. In a mold for use in the construction of hollow concrete alls, comprising outer mold sections provided With hooks Which extend above'the upper edges thereof, inner mold sections of less length than the outer sections the side pieces thereof being connected and provided with hooks that extend above the upper edges thereof, a rod for engagement With the hooks, means for closing the spaces between the inner mold sections, the space 0 closing means having recesses to receive Wall-ties, and spacing bars maintained in 1 hinged engagement with the closures.

ARMINI GENDRON. JOHN R. RICHARDSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

